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Test 3 Questions

Properties, Changes, Chemistry

What is a characteristic of a substance that can be measured or observed without changing the identity of the material? Physical Property
All of the following involves chemical changed EXCEPT _____ A) The burning of gasoline in a car B) Melting of ice C) The rusting of a car in a junk yard D) The digestion of food in your stomach B
Which of the following is NOT evidence of a chemical change? A) Occurrence of fizzing B) Change of phase C) Color change D) Formation of a precipitate B
Which of the following is an example of a chemical change? A) Water boiling B) Paper being cut C) Ice freezing D) Iron rusting D
What is the difference between a chemical and physical change? Physical change - just changes what the objuct or compound looks like. Chemical change - Changes the chemical composition of the object.
What is the difference between a chemical property and physical property? Physical - Characteristics Chemical - Ability to change
What is the difference between a chemical property and a chemical property? Change - Changes the substance Property - Ability to change
What is the difference between a physical property and a physical change? Property - Characteristics Change - Changes what the object looks like.
Why is boiling water not a chemical change? Because it is just changing the state of matter and no the chemical composition.
A reaction starts with one chemical that results in the formation of two new chemicals, what type of reaction is this? Decomposition
What type of reaction will combine two simple chemicals into a new more complex chemical? Synthesis
Created by: LTedder